import java.util.*;
public class Text3 {
    public static void main(String[] args) {
        Properties a=System.getProperties();
        Enumeration b=a.propertyNames();
        while(b.hasMoreElements())
        {
            String key=(String) b.nextElement();
            String value=System.getProperty(key);
            System.out.println(key+"---->"+value);
        }
    }
}
